Where does “יעקבֿ” come from?

יעקבֿ (Yiddish) comes from Hebrew יַעֲקֹב, from Hebrew עָקֵב — heel of the foot; heel.

Ancestry of “יעקבֿ”, step by step

Step	Language	Word	Meaning
1	Hebrew	יַעֲקֹב	Jacob
2	Hebrew	עָקֵב	heel of the foot; heel